package com.gulimall.product.service.impl;

import com.alibaba.fastjson.TypeReference;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.gulimall.common.constant.ProductConstant;
import com.gulimall.common.to.SkuHasStockVO;
import com.gulimall.common.to.SkuReductionTO;
import com.gulimall.common.to.SpuBoundTO;
import com.gulimall.common.to.es.SkuEsModel;
import com.gulimall.common.utils.PageUtils;
import com.gulimall.common.utils.Query;
import com.gulimall.common.utils.R;
import com.gulimall.product.dao.SpuInfoDao;
import com.gulimall.product.entity.*;
import com.gulimall.product.feign.CouponFeignService;
import com.gulimall.product.feign.SearchFeignService;
import com.gulimall.product.feign.WareFeignService;
import com.gulimall.product.service.*;
import com.gulimall.product.vo.*;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.util.*;
import java.util.stream.Collectors;


@Service("spuInfoService")
public class SpuInfoServiceImpl extends ServiceImpl<SpuInfoDao, SpuInfoEntity> implements SpuInfoService {

    @Autowired
    SpuInfoDescService descService;

    @Autowired
    SpuImagesService imagesService;

    @Autowired
    AttrService attrService;

    @Autowired
    ProductAttrValueService attrValueService;

    @Autowired
    SkuInfoService skuInfoService;

    @Autowired
    SkuImagesService skuImagesService;

    @Autowired
    SkuSaleAttrValueService skuSaleAttrValueService;

    @Autowired
    CouponFeignService couponFeignService;

    @Autowired
    BrandService brandService;

    @Autowired
    CategoryService categoryService;

    @Autowired
    WareFeignService wareFeignService;

    @Autowired
    SearchFeignService searchFeignService;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),
                new QueryWrapper<SpuInfoEntity>()
        );

        return new PageUtils(page);
    }

    @Transactional
    @Override
    public void saveSpuInfo(SpuSaveVO vo) {
        //1.保存spu基本信息：pms_spu_info
        SpuInfoEntity infoEntity = new SpuInfoEntity();
        BeanUtils.copyProperties(vo,infoEntity);
        infoEntity.setCreateTime(new Date());
        infoEntity.setUpdateTime(new Date());
        this.saveBaseSupInfo(infoEntity);

        //2.保存spu的描述图片；pms_spu_info_desc
        List<String> decript = vo.getDecript();
        SpuInfoDescEntity descEntity = new SpuInfoDescEntity();
        descEntity.setSpuId(infoEntity.getId());
        descEntity.setDecript(String.join(",",decript));
//        descService.saveSpuInfoDesc(descEntity);
        descService.save(descEntity);

        //3.保存spu的图片集：pms_spu_images
        List<String> images = vo.getImages();
        imagesService.saveImages(infoEntity.getId(),images);

        //4.保存spu的规格参数：pms_product_attr_value
        List<BaseAttrs> baseAttrs = vo.getBaseAttrs();
        List<ProductAttrValueEntity> attrValueEntities = baseAttrs.stream().map(attr -> {
            ProductAttrValueEntity productAttrValueEntity = new ProductAttrValueEntity();
            productAttrValueEntity.setAttrId(attr.getAttrId());
            productAttrValueEntity.setAttrValue(attr.getAttrValues());
            AttrEntity byId = attrService.getById(attr.getAttrId());
            productAttrValueEntity.setAttrName(byId.getAttrName());
            productAttrValueEntity.setQuickShow(attr.getShowDesc());
            productAttrValueEntity.setSpuId(infoEntity.getId());
            return productAttrValueEntity;
        }).collect(Collectors.toList());
        attrValueService.saveProductAttr(attrValueEntities);

        //5.保存spu的积分信息：gulimall-sms-> sms_spu_bounds
        Bounds bounds = vo.getBounds();
        SpuBoundTO spuBoundTO = new SpuBoundTO();
        BeanUtils.copyProperties(bounds,spuBoundTO);
        spuBoundTO.setSpuId(infoEntity.getId());
        R r = couponFeignService.saveSpuBounds(spuBoundTO);
        if (r.getCode() !=0){
            log.error("远程保存spu积分信息失败");
        }

        //5.保存当前spu的所有sku信息
        List<Skus> skus = vo.getSkus();
        if (skus !=null && skus.size()>0){
            skus.forEach(item ->{

                String defalutImageUrl = "";
                for (Images image : item.getImages()) {
                    if (image.getDefaultImg() == 1){
                        defalutImageUrl = image.getImgUrl();
                    }
                }

                SkuInfoEntity skuInfoEntity = new SkuInfoEntity();
                BeanUtils.copyProperties(item,skuInfoEntity);
                skuInfoEntity.setBrandId(infoEntity.getBrandId());
                skuInfoEntity.setCatalogId(infoEntity.getCatalogId());
                skuInfoEntity.setSaleCount(0L);
                skuInfoEntity.setSpuId(infoEntity.getId());
                skuInfoEntity.setSkuDefaultImg(defalutImageUrl);
                //5.1 SKU的基本信息：pms_sku_info
                skuInfoService.saveSkuInfo(skuInfoEntity);

                Long skuId = skuInfoEntity.getSkuId();
                List<SkuImagesEntity> imagesEntities = item.getImages().stream().map(img -> {
                    SkuImagesEntity skuImagesEntity = new SkuImagesEntity();
                    skuImagesEntity.setSkuId(skuId);
                    skuImagesEntity.setImgUrl(img.getImgUrl());
                    skuImagesEntity.setDefaultImg(img.getDefaultImg());
                    return skuImagesEntity;
                }).filter(entity->{
                    return StringUtils.isNotEmpty(entity.getImgUrl());
                }).collect(Collectors.toList());
                //5.2 SKU的图片信息：pms_sku_images
                skuImagesService.saveBatch(imagesEntities);

                //5.3 SKU的销售属性信息：pms_sku_sale_attr_value
                List<Attr> attr = item.getAttr();
                List<SkuSaleAttrValueEntity> skuSaleAttrValueEntities = attr.stream().map(a -> {
                    SkuSaleAttrValueEntity skuSaleAttrValueEntity = new SkuSaleAttrValueEntity();
                    BeanUtils.copyProperties(a, skuSaleAttrValueEntity);
                    skuSaleAttrValueEntity.setSkuId(skuId);
                    return skuSaleAttrValueEntity;
                }).collect(Collectors.toList());
                skuSaleAttrValueService.saveBatch(skuSaleAttrValueEntities);

                //5.4 SKU的优惠，满减信息：gulimall-sms->sms_sku_ladder-->sms_sku_full_reduction-->sms_member_price
                SkuReductionTO skuReductionTO = new SkuReductionTO();
                BeanUtils.copyProperties(item,skuReductionTO);
                skuReductionTO.setSkuId(skuId);
                if (skuReductionTO.getFullCount() > 0 || skuReductionTO.getFullPrice().compareTo(new BigDecimal("0")) == 1){
                    R r1 = couponFeignService.saveSkuReduction(skuReductionTO);
                    if (r1.getCode() !=0){
                        log.error("远程保存sku优惠信息失败");
                    }
                }

            });
        }



    }

    @Override
    public void saveBaseSupInfo(SpuInfoEntity spuInfoEntity) {
        this.baseMapper.insert(spuInfoEntity);
    }

    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
                    QueryWrapper<SpuInfoEntity> wrapper = new QueryWrapper<>();
                    String key = (String) params.get("key");
                    if (StringUtils.isNotEmpty(key)){
                        wrapper.and(w->{
                            w.eq("id",key).or().like("spu_name",key);
                        });
                    }
        String status = (String) params.get("status");
        if (StringUtils.isNotEmpty(status)){
            wrapper.eq("publish_status",status);
        }
        String brandId = (String) params.get("brandId");
        if (StringUtils.isNotEmpty(brandId) && !"0".equalsIgnoreCase(brandId)){
            wrapper.eq("brand_id",brandId);
        }
        String catelogId = (String) params.get("catelogId");
        if (StringUtils.isNotEmpty(catelogId) && !"0".equalsIgnoreCase(brandId)){
            wrapper.eq("catalog_id",catelogId);
        }

        IPage<SpuInfoEntity> page = this.page(
                new Query<SpuInfoEntity>().getPage(params),wrapper

        );

        return new PageUtils(page);
    }

    @Override
    public void up(Long spuId) {
        //查出当前spuid对应的所有sku信息，品牌名字
        List<SkuInfoEntity> skus = skuInfoService.getSkusBySpuId(spuId);
        List<Long> skuIds = skus.stream().map(SkuInfoEntity::getSkuId).collect(Collectors.toList());

        //查询当前sku的所有可以被检索的规格属性attrs
        List<ProductAttrValueEntity> baseAttrs = attrValueService.baseAttrlistforspu(spuId);
        List<Long> attrIds = baseAttrs.stream().map(attr -> {
            return attr.getAttrId();
        }).collect(Collectors.toList());

        List<Long> searchAttrsIds = attrService.selectSearchAttrs(attrIds);
        Set<Long> idSet = new HashSet<>(searchAttrsIds);
        List<SkuEsModel.Attrs> attrsList = baseAttrs.stream().filter(item -> {
            return idSet.contains(item.getAttrId());
        }).map(item -> {
            SkuEsModel.Attrs attrs = new SkuEsModel.Attrs();
            BeanUtils.copyProperties(item, attrs);
            return attrs;
        }).collect(Collectors.toList());

        Map<Long, Boolean> stockMap = null;
        try {
            //远程调用库存服务，判断是否有库存
            R res = wareFeignService.getSkusHasStock(skuIds);
            TypeReference<List<SkuHasStockVO>> typeReference = new TypeReference<List<SkuHasStockVO>>() {
            };

//            List<SkuHasStockVO> skusHasStock = (List<SkuHasStockVO>) res.get("data");
            List<SkuHasStockVO> skusHasStock = skusHasStock = res.getData(typeReference);
             stockMap = skusHasStock.stream().collect(Collectors
                    .toMap(SkuHasStockVO::getSkuId, item -> item.getHasStock()));
        }catch (Exception e){
            log.error("库存服务查询异常：原因{}",e);
        }

        //1.组装数据
        Map<Long, Boolean> finalStockMap = stockMap;
        List<SkuEsModel> upProducts = skus.stream().map(sku -> {
            //2.封装每个sku的信息
            SkuEsModel skuEsModel = new SkuEsModel();
            BeanUtils.copyProperties(sku,skuEsModel);
            skuEsModel.setSkuPrice(sku.getPrice());
            skuEsModel.setSkuImg(sku.getSkuDefaultImg());



            skuEsModel.setHasStock(finalStockMap == null ? true : finalStockMap.get(sku.getSkuId()));
            //热度评分。0
            skuEsModel.setHotScore(0L);
            //查询品牌和分类的名字
            BrandEntity brand = brandService.getById(skuEsModel.getBrandId());
            skuEsModel.setBrandName(brand.getName());
            skuEsModel.setBrandImg(brand.getLogo());

            CategoryEntity category = categoryService.getById(skuEsModel.getCatalogId());
            skuEsModel.setCatalogName(category.getName());
            //设置检索属性
            skuEsModel.setAttrs(attrsList);
            return skuEsModel;
        }).collect(Collectors.toList());

        //远程调用es上传
        R r = searchFeignService.productStatusUp(upProducts);

        if (r.getCode() == 0){
            //修改spu当前状态
            this.baseMapper.updateStatus(spuId, ProductConstant.StatusEnum.SPU_UP.getCode());
        }else {
            //重复调用？接口幂等性
            /*
            * FEIGN的调用流程
            * 1.构造请求数据，将对象转为json
            *   RequestTemplate template = buildTemplateFromArgs.create(argv);
            * 2.发送请求执行(成功会解码响应数据)
            *       excuteAndDecode(template)
            * 3.执行请求会有重试机制
            *   while(true){
            *   try{
            *       executeAndDecode(template);
            * }catch(){
            *
            * try{retryer.continueOrPropagate(e);}catch{
            * throw ex;}
            * continue;
            * }
            *
            * }
            * */
        }
    }

}